DETECTION CALIBRATION CIRCUIT AND TRANSMISSION APPARATUS

摘要

A detection calibration circuit includes a first distributor distributing a high frequency input signal, an amplifier amplifying the first high frequency output signal of the first distributor, a second distributor distributing the amplified first high frequency output signal of the first distributor, a reference signal generator outputting a reference signal in accordance with a switchable reference voltage, a switcher selecting a third high frequency output signal of the second distributor or a reference signal of the reference signal generator and outputting the selected signal, a detector detecting the third high frequency output signal of the second distributor or the reference signal of the reference signal generator from the switcher, a sensitivity switcher adjusting a sensitivity for an output signal of the detector, and a calibration control circuit adjusting a detection gain of an input signal of the detector and an input-output sensitivity for an output signal of the detector.

主权项

1. A detection calibration circuit comprising:
a first distributor that distributes a first high frequency input signal into a first high frequency signal and a second high frequency signal; a first amplifier that amplifies the first high frequency signal; a second distributor that distributes the amplified first high frequency signal further into a third high frequency signal and a fourth high frequency signal; a reference signal generator that uses the second high frequency signal to generate a reference signal in accordance with a switchable reference voltage; a switcher that selects the third high frequency signal or the reference signal of the reference signal generator; a detector that outputs a detection signal obtained by detecting the selected signal; a sensitivity switcher that adjusts an input-output sensitivity for the detection signal; and a calibration control circuit that adjusts a detection gain of the detector and an input-output sensitivity for the detection signal.